Fix `clippy` lint 'suspicious_open_options' #10020

Job	Run time
Prepare	4s
Build native (x86_64, x86_64, x86_64-linux-android)	3m 46s
Build native (i686, x86, i686-linux-android)	3m 56s
Generate relay list	1m 22s
Build native (aarch64, arm64-v8a, aarch64-linux-android)	3m 42s
Build native (armv7, armeabi-v7a, armv7-linux-androideabi)	3m 55s
Build app and run unit tests	10m 59s
Run instrumented tests (app)	6m 29s
Run instrumented e2e tests	0s
Run firebase tests	0s
	34m 13s

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